/usr/share/doc/boxshade/examples/input.aln is in boxshade 3.3.1-9.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 | CLUSTAL W(1.5) multiple sequence alignment
Seq1 GTSAGILPERTHKKNMIE..
Seq2 GSS.GLLPEKTHRRNMIELY
Seq3 GTTGGAAPSKTHSRNMIDAI
*.. * * .** .***.
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